When I use minitab to test for normality with a norm plot and use the Anderson-Darling choice it reports two numbers (actually more, but only two that have me confused); p and A^2. I observe that p goes up with better fits and A^2 seems to go down. I'm guessing that p represents something like the probablility of a getting a fit this bad or worse from a normal population, and I have no clue about A^2. Can someone give a good definition of the meaning of these two values, and ..... How are they derived?
Thanks Pat Ballew Edgren HS Misawa, Japan firstname.lastname@example.org